that would be great 里面的WOULD是什么语法啊?为什么用WOULD

that would be great 里面的WOULD是什么语法啊?为什么用WOULD THAT WOULD BE GREAT里面的WOULD是什么意思?什么语法啊 that would be great if you would be loved,love and be loveable,为什么用would,是什么语法? that would be of great fun 那太好了.为什么是that would be great而不是that will be great that would be fine ＆that is fine 的区别是什么. That would be That would be vevy that would be 用法 英语翻译That would be great./ That's great./That will be great.w that在句中的意思,并解释为什么用would,是什么语法现象